Hello, my name is Mark and I will try help you.
It is unlikely to be the brakes because if one side were to be stuck the burning rubber smell would have been from the tyre and would be easy to see due to the damage it would have taken.
More likely is for it to be coming from the alternator drive belt in the engine bay.
Did you hear any screeching noises when you were driving home before you got the burning smell?
Do you still need assistance with this?